void main() {
  // List<String> myList = ['张三', 18, true, 1.68];
  // print(myList);

  // Map<String, String> myMap = {'name': '张三', 'age': 18, 'sex': true, 'height': 1.68};
  // print(myMap);

  print(myFunc<String>('张三'));

  print(myFunc<num>(100.99));
}

T myFunc<T>(T value) {
  return value;
}
